Flow channel and heating, ventilation, or air conditioning system

Abstract

A flow channel, in particular for a heating, ventilation, or air conditioning system, whereby the flow channel has a flow channel inner wall with at least one recess and at least one sound-permeable cover, whereby the at least one sound-permeable cover covers the at least one recess in order to conduct a fluid stream, flowing through the flow channel, away from the at least one recess, and with at least one acoustic dampening chamber, which surrounds the at least one recess on a side, facing away from the flow channel, of the at least one sound-permeable cover, whereby the at least one acoustic dampening chamber has at least one partition wall that divides the at least one acoustic dampening chamber into at least two compartments.

What is claimed is: 
     
         1 . A flow channel for a heating, ventilation, or air conditioning system, the flow channel comprising:
 a flow channel inner wall with at least one recess and at least one sound-permeable cover, the at least one sound-permeable cover covering the at least one recess in order to conduct a fluid stream flowing through the flow channel away from the at least one recess; and   at least one acoustic dampening chamber that surrounds the at least one recess on a side, facing away from the flow channel, of the at least one sound-permeable cover, the at least one acoustic dampening chamber having at least one partition wall that divides the at least one acoustic dampening chamber into at least two compartments.   
     
     
         2 . The flow channel according to  claim 1 , wherein the at least one partition wall has a purality of openings. 
     
     
         3 . The flow channel according to  claim 2 , wherein the openings are formed as holes and/or slits. 
     
     
         4 . The flow channel according to  claim 1 , wherein the at least one partition wall substantially divides the at least one acoustic dampening chamber into a first compartment facing the flow channel and disposed adjacent to the at least one sound-permeable cover and into a second compartment facing away from the flow channel. 
     
     
         5 . The flow channel according to  claim 1 , wherein the at least one partition wall is arranged substantially parallel to the at least one sound-permeable cover and connects two side walls, arranged substantially vertically to the at least one sound-permeable cover, of the at least one acoustic dampening chamber to one another. 
     
     
         6 . The flow channel according to  claim 1 , wherein the at least one sound-permeable cover is a nonwoven material. 
     
     
         7 . The flow channel according to  claim 1 , wherein the at least one acoustic dampening chamber is made as a single piece with the flow channel. 
     
     
         8 . The flow channel according to  claim 1 , wherein the at least one acoustic dampening chamber has at least one inner wall region, on which surface structures suitable for sound dampening are formed. 
     
     
         9 . The flow channel according to  claim 1 , wherein the flow channel has two or more than two acoustic dampening chambers arranged in a fluid flow direction one behind the other and/or substantially opposite to one another and/or offset to one another on the flow channel inner wall, with at least one partition wall and with at least one sound-permeable cover. 
     
     
         10 . The flow channel according to  claim 1 , wherein the at least one acoustic dampening chamber has two or more than two partition walls. 
     
     
         11 . The flow channel according to  claim 1 , wherein a sound wave frequency range to be dampened can be established by varying the dimensioning of the at least one acoustic dampening chamber and/or by varying the surface structures and/or the number of partition walls and/or the number and/or design of the openings. 
     
     
         12 . The flow channel according to  claim 1 , wherein the flow channel has a substantially round and/or a substantially rectangular and/or a substantially square cross section. 
     
     
         13 . A heating, ventilation, or air conditioning system for a motor vehicle or a building, wherein at least one flow channel according to  claim 1  is disposed in the heating, heating, or air conditioning system.